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Finding the Fourth Proportional to 14,890.76, 20,549.64 and 8,176.82

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Solution

The fourth proportional to 14,890.76, 20,549.64 and 8,176.82 is: 11,284.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,890.76 : 20,549.64 = 8,176.82 : x
  2. Step 2: Convert to fraction form
    14,890.76/20,549.64 = 8,176.82/x
  3. Step 3: Cross multiply
    14,890.76x = 20,549.64 × 8,176.82
  4. Step 4: Simplify right side
    14,890.76x = 168,030,707.34
  5. Step 5: Solve for x
    x = 168,030,707.34/14,890.76
  6. Step 6: Final answer
    x = 11,284.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.